I'm not sure about that. In my opinion either the median needs to be wide enough that people actually want to be there (I would argue 10' is not nearly wide enough for that), or you keep the median small and use it to add some tree cover.
I have seen a leaked draft schedule for the Worcester Line with all day 30 minute frequencies to Framingham. Obviously that doesn't make it guaranteed but it's absolutely being planned.
For the GJ itself It would maybe help a little but not that much, and as F-Line said the entirely different system probably outweighs any benefits. The better solution (IMO) is to do an elevated viaduct for grade separations. The Grand Junction thread has more discussion about that but the TLDR...
So let's compare with some actual subway stations, plus a couple others on Rt 1.
Station
Walkshed Population
2019 Weekday Boardings (If applicable)
Estimated Riderhship
Bellingham Sq
20.7k
~13.5k (Based on Davis)
Prattville
14.6k
~5k (Based on Revere Beach, some bus transfers added.)...
The stations at Revere Center and Woodlawn are both fairly compelling IMO, and Woodlawn is probably cost-effective because of point 2:
Along Route 1, both Prattville and Woodlawn are very well situated for bus transfers and integration using the BERy Model. (I like that name better and it's way...
You would be correct. There's also the fact that GL/OL/RL rolling stock isn't the only thing available. (From my understanding) just about any subway car could be juiced up to handle higher gradients. Obviously this is usually more expensive than just, not having higher gradients, but that's...
Height, sure. Straddling? Probably not. The slim supports of modern concrete viaducts could easily fit in the ~15' of shoulder space on Rt 1.
Agreed. Everett is the clear winner of the 3 options. However, it's still worth keeping in mind that routing an Everett subway via the Tobin only really...
How feasible is the Rt 1 alignment?
From South to North, what might a subway line along Rt 1 look like?
Map
The basics: The line would run from Charlestown (continuing on to... somewhere) to either Woodlawn (around Park Ave) or Northgate (Squire Rd).
Stations: Constitution, Admirals Hill...
I really see no reason to handicap such a line by using the Brattle loop. You could run elevated rail over Rt 1 for most of the same effect, then head over N. Washington St for a surface or elevated terminus next to Haymarket. That could at least be high-floor light rail or even full subway...
Any bridge replacement is probably far enough out that we could speculate 6-8 minute headways on the branches but the point doesn't really change. Both branches need better.
Here's a map with basically any alt. I could either find or think of. I'd almost certainly lean towards heavy rail, it has options that span across the possible cost spectrum.